diff --git a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/restapi/AcceptsCreate.java b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/restapi/AcceptsCreate.java
index ba99a7d16f..994e7f28f1 100644
--- a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/restapi/AcceptsCreate.java
+++ b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/restapi/AcceptsCreate.java
@@ -30,5 +30,5 @@ public interface AcceptsCreate<P extends RestResource> {
    *     returned view object, as it will not be passed.
    * @throws RestApiException the view cannot be constructed.
    */
-  <I> RestModifyView<P, I> create(P parent, IdString id) throws RestApiException;
+  RestModifyView<P, ?> create(P parent, IdString id) throws RestApiException;
 }
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/account/AccountsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/account/AccountsCollection.java
index 1669c4d06d..dcda816018 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/account/AccountsCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/account/AccountsCollection.java
@@ -162,7 +162,6 @@ public class AccountsCollection
     return views;
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public CreateAccount create(TopLevelResource parent, IdString username) {
     return createAccountFactory.create(username.get());
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/account/EmailsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/account/EmailsCollection.java
index 1c329bb435..c8c1db8564 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/account/EmailsCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/account/EmailsCollection.java
@@ -85,7 +85,6 @@ public class EmailsCollection
     return views;
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public CreateEmail create(AccountResource parent, IdString email) {
     return createEmailFactory.create(email.get());
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/account/StarredChanges.java b/gerrit-server/src/main/java/com/google/gerrit/server/account/StarredChanges.java
index a6c844becd..e3c4bb1964 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/account/StarredChanges.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/account/StarredChanges.java
@@ -97,7 +97,6 @@ public class StarredChanges
     };
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public RestModifyView<AccountResource, EmptyInput> create(AccountResource parent, IdString id)
       throws UnprocessableEntityException {
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeEdits.java b/gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeEdits.java
index a4d12a6e20..b8e8356318 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeEdits.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/change/ChangeEdits.java
@@ -112,7 +112,6 @@ public class ChangeEdits
     return new ChangeEditResource(rsrc, edit.get(), id.get());
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public Create create(ChangeResource parent, IdString id) throws RestApiException {
     return createFactory.create(id.get());
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/group/GroupsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/group/GroupsCollection.java
index c8ab8f72d0..4d3bd11bab 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/group/GroupsCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/group/GroupsCollection.java
@@ -188,7 +188,6 @@ public class GroupsCollection
     return null;
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public CreateGroup create(TopLevelResource root, IdString name) {
     return createGroup.create(name.get());
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/group/MembersCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/group/MembersCollection.java
index 4c0d458d6a..fdfb4133d2 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/group/MembersCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/group/MembersCollection.java
@@ -92,7 +92,6 @@ public class MembersCollection
     }
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public PutMember create(GroupResource group, IdString id) {
     return new PutMember(put, id.get());
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/group/SubgroupsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/group/SubgroupsCollection.java
index e2aacd6675..720c6df41e 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/group/SubgroupsCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/group/SubgroupsCollection.java
@@ -87,7 +87,6 @@ public class SubgroupsCollection
     }
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public PutSubgroup create(GroupResource group, IdString id) {
     return new PutSubgroup(addSubgroups, id.get());
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/plugins/PluginsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/plugins/PluginsCollection.java
index a1dc5c1e29..768aa86562 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/plugins/PluginsCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/plugins/PluginsCollection.java
@@ -66,7 +66,6 @@ public class PluginsCollection
     return new PluginResource(p);
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public InstallPlugin create(TopLevelResource parent, IdString id)
       throws ResourceNotFoundException, MethodNotAllowedException {
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/project/BranchesCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/project/BranchesCollection.java
index 77cc903128..a40eabbd69 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/project/BranchesCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/project/BranchesCollection.java
@@ -98,7 +98,6 @@ public class BranchesCollection
     return views;
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public CreateBranch create(ProjectResource parent, IdString name) {
     return createBranchFactory.create(name.get());
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/project/DashboardsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/project/DashboardsCollection.java
index dfd5a422a3..4b0e8c5e60 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/project/DashboardsCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/project/DashboardsCollection.java
@@ -82,7 +82,6 @@ class DashboardsCollection
     return list.get();
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public RestModifyView<ProjectResource, ?> create(ProjectResource parent, IdString id)
       throws RestApiException {
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectsCollection.java
index d461a7d5e3..e0741f00d3 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectsCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectsCollection.java
@@ -142,7 +142,6 @@ public class ProjectsCollection
     return views;
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public CreateProject create(TopLevelResource parent, IdString name) {
     return createProjectFactory.create(name.get());
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/project/TagsCollection.java b/gerrit-server/src/main/java/com/google/gerrit/server/project/TagsCollection.java
index 82afce4fe9..78670ad205 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/project/TagsCollection.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/project/TagsCollection.java
@@ -58,7 +58,6 @@ public class TagsCollection
     return views;
   }
 
-  @SuppressWarnings("unchecked")
   @Override
   public CreateTag create(ProjectResource resource, IdString name) {
     return createTagFactory.create(name.get());